61.下列何者為盛行於北美洲密西西比河流域，兩型性（dimorphic）全身感染性真菌？ (A)Blastomyces dermatitidis and Histoplasma capsulatum (B)Coccidioides immitis and Paracoccidioides brasiliensis (C)Paracoccidioides brasiliensis and Histoplasma capsulatum (D)Blastomyces dermatitidis and Paracoccidioides brasiliensis